cdma2000 Femtocell Network: Overview

Transcription

1 GPP X.S A Version.0 Date: December cdma00 Femtocell Network: Overview COPYRIGHT GPP and its Organizational Partners claim copyright in this document and individual Organizational Partners may copyright and issue documents or standards publications in individual Organizational Partner's name based on this document. Requests for reproduction of this document should be directed to the GPP Secretariat at Requests to reproduce individual Organizational Partner's documents should be directed to that Organizational Partner. See for more information.

2 GPP X.S A v.0 Revision History Revision Description of Changes Date Rev. 0 v.0 Initial Publication January 0 Rev. A v.0 Updated Publication December

3 GPP X.S A v.0 0 CONTENTS cdma00 Femtocell Network: Overview List of Figures...iii List of Tables...iv Foreword...v Introduction.... Scope.... Document Conventions... References.... Normative References... Definitions and Abbreviations.... Definitions.... Abbreviations... List of Parts... Architectural Model and Reference Points.... Femtocell cdma00 x Circuit Service Architecture..... IMS-based Femtocell cdma00 x Circuit Service Architecture with MSC..... IMS-based Femtocell cdma00 x Circuit Service Architecture with MSCe..... IOS-based Femtocell cdma00 x Circuit Service Architecture with MSC..... IOS-based Femtocell cdma00 x Circuit Service Architecture with MSCe..... Network Entities Reference Points..... Protocol Descriptions FIAP (Femtocell IOS Application Protocol)... FIAPCP (FIAP Convergence Protocol)... FCP (Femtocell Control Protocol)... FCPCP (FCP Convergence Protocol)... FIAP/FIAPCP Transport Protocols... FCP/FCPCP Transport Protocols.. cdma00 x Circuit Protocol Stack IMS-based Femtocell Architecture... IOS-based Femtocell Architecture. HRPD/cdma00 x Packet Data Femtocell Architecture..... Network Entities..... Reference Points..... Protocol Stack i Contents

4 GPP X.S A v.0... Control Plane... User Plane. ehrpd Femtocell Architecture..... Network Entities..... Reference Points..... Protocol Stack... 0 Contents 000-ii

5 GPP X.S A v.0 0 LIST OF FIGURES Figure IMS-based cdma00 x Circuit Service Femtocell Network Architecture with MSC... Figure IMS-based cdma00 x Circuit Service Femtocell Network Architecture with MSCe... Figure IOS-based cdma00 x Circuit Service Femtocell Network Architecture with MSC... Figure IOS-based cdma00 x Circuit Service Femtocell Network Architecture with MSCe...0 Figure Control Plane between MS and FCS for Voice/SMS... Figure User Plane between MS and MGW for Voice... Figure Control Plane Protocol Stacks when the FGW Uses Ap to the MSCe... Figure User Plane Protocol Stacks when the FGW Uses Ap to the MSCe... Figure Control Plane Protocol Stacks when the FGW Uses A to the MSC... Figure 0 User Plane Protocol Stacks when the FGW Uses A to the MSC... Figure Protocol Stacks for FCP (FCP and FCP/FCPCP Transport)... Figure HRPD/cdma00 x Packet Femtocell Network Architecture... Figure Control Plane between FAP and SeGW... Figure Control Plane Between FAP, FGW, and PDSN... Figure Control Plane Between MS and PDSN... Figure User Plane... Figure ehrpd Femtocell Network Architecture iii List of Figures

6 X.S A v.0 LIST OF TABLES Table List of Parts... 0 List of Tables 000-iv

7 GPP X.S A v.0 0 FOREWORD (This foreword is not part of this specification.) This document was prepared by the Third Generation Partnership Project (GPP) TSG-X Working Group. This document is a new specification. This document is part of a multi-part document. The multiple parts together specify the cdma00 Femtocell Network. This document is subject to change following formal approval procedures. Should this document be modified in the future, it will be re-released with a change-of-release date and an identifying change in version number as follows: where: X.S X-n X: a numerical or uppercase alphabetic character [A, B, C, ] that indicates the revision level; n: a numeric string [,,, ] that indicates the point release level. cdma00 is the trademark for the technical nomenclature for certain specifications and standards of the Organizational Partners (OPs) of GPP. Geographically (and as of the date of publication), cdma00 is a registered trademark of the Telecommunications Industry Association (TIA-USA) in the United States. 000-v Foreword

8 X.S A v.0 0 Foreword 000-vi This page is intentionally left blank.

9 GPP X.S A v.0 0 Introduction. Scope This document provides an overview of the series of documents that specify the HRPD, ehrpd, and cdma00 x Femtocell network. This series of documents defines an architecture model and set of specifications for an HRPD, ehrpd, and cdma00 x Femtocell network that can support existing services provided by HRPD, ehrpd, and cdma00 x.. Document Conventions Shall and shall not identify requirements to be followed strictly to conform to this document and from which no deviation is permitted. Should and should not indicate that one of several possibilities is recommended as particularly suitable, without mentioning or excluding others, that a certain course of action is preferred but not necessarily required, or that (in the negative form) a certain possibility or course of action is discouraged but not prohibited. May and need not indicate a course of action permissible within the limits of the document. Can and cannot are used for statements of possibility and capability, whether material, physical or causal. Introduction 000-

10 X.S A v.0 References. Normative References This section provides references to other specifications and standards that are necessary to implement this document. References are either specific (identified by date of publication, revision identifier, and version number) or non-specific. For a specific reference, subsequent revisions may not apply. For a non-specific reference, the latest revision applies. [X.S000] GPP: X.S000-0 v.0, MAP Location Services Enhancements ; June 0. [X.S00] GPP: X.S00-0 v.0, IP-Based Location Services ; November 0. [C.S00] GPP: C.S00-B v.0, Position Determination Service for cdma00 Spread Spectrum Systems ; April 0. [J-STD-0] Joint ATIS/TIA: J-STD-0-C, Enhanced Wireless -- Phase II ; January 0. [TS.00] GPP: TS.00 v..0, Network Architecture (Release ) ; September 0. [X.S00] [A.S00] [A.S00] [A.S00] [A.S00] [X.S00] GPP: X.S00-E v.0, cdma00 Wireless IP Network Standard ; November 0. GPP: A.S00-A v.0, Interoperability Specification (IOS) for Femtocell Access Points ; April,. GPP: A.S00-C v.0, Interoperability Specification (IOS) for cdma00 Access Network Interfaces Part Transport ; September 0. GPP: A.S00-C v.0, Interoperability Specification (IOS) for cdma00 Access Network Interfaces Part (A, Ap, A, and A Interfaces) ; September 0. GPP: A.S00-A v.0, Interoperability Specification (IOS) for Evolved High Rate Packet Data (ehrpd) Radio Access Network Interfaces and Interworking with Enhanced Universal Terrestrial Radio Access Network (E-UTRAN) ; February. GPP: X.S00, E-UTRAN ehrpd Connectivity and Interworking: Core Network Aspects. [X.S00-00] GPP: X.S00-00-A, cdma00 Femtocell Network: Packet Data Network Aspects. [X.S00-0] GPP: X.S00-0-A, cdma00 Femtocell Network: x and IMS Network Aspects. [X.S00-0] GPP: X.S00-0-0, cdma00 Femtocell Network: Overview References

11 GPP X.S A v.0 0 Definitions and Abbreviations. Definitions This section provides definitions, symbols and abbreviations that are used throughout the document. For the purposes of this document, the following definitions apply. Femtocell Access Point (FAP) A Femtocell Access Point (FAP) provides cdma00 coverage in a small area, usually a private residence or a small office, and connects the MS to an operator s network via a broadband IP connection (e.g., DSL, cable). The FAP may operate in cdma00 x mode, HRPD mode, ehrpd mode, or any combination thereof. The FAP, when operating in ehrpd mode, is referred to as an efap. Femtocell Access Control This function allows any MS that is part of the Access Control List (ACL) for a FAP to access services through that FAP. The types of Femtocell access control include open association, restricted association, and signaling association. Open Association Any MS can register with the FAP and access the services provided by cdma00 x, HRPD, and ehrpd. Restricted Association Only an MS in the ACL for a given FAP is allowed to register and access the services provided by cdma00 x, HRPD, and ehrpd. Signaling Association Any MS can register with the FAP, but during a service access, the MS may be redirected to a macro base station if that MS is not included in the FAP ACL (i.e., the MS is not authorized to access service through the FAP).. Abbreviations GPP rd Generation Partnership Project AAA Authentication, Authorization and Accounting AC Authentication Center ACL Access Control List ACS Auto-Configuration Server AKA Authentication and Key Agreement AN Access Network BS Base Station BSC Base Station Controller Definitions and Abbreviations 000-

12 X.S A v.0 DSL Digital Subscriber Line ean Evolved Access Network efap Evolved Femtocell Access Point ehrpd Evolved High Rate Packet Data EPC Evolved Packet Core FA Foreign Agent FAP Femtocell Access Point FCP Femtocell Control Protocol FCPCP Femtocell Control Protocol Convergence Protocol FCS Femtocell Convergence Server FIAP Femtocell IOS Application Protocol FMS Femtocell Management System HA Home Agent HLR Home Location Register HRPD High Rate Packet Data HSGW HRPD Serving Gateway IKE Internet Key Exchange IMS IP Multimedia Subsystem IOS Interoperability Specification IP Internet Protocol IPsec IP Security ISC IP Multimedia Service Control L Layer L Layer L Layer LAC Link Access Control LIIWF LMSD-IMS Interworking Function LIPA Local IP Access LMA Local Mobility Anchor LMSD Legacy MS Domain MAC Media Access Control MAG Mobile Access Gateway MAP Mobile Application Part MC Message Center MGCF Media Gateway Control Function MGW Media Gateway MIP Mobile IP MS Mobile Station MSC Mobile Switching Center PCF Packet Control Function PCRF Policy and Charging Rules Function PMIP Proxy Mobile IP Definitions and Abbreviations

13 GPP X.S A v.0 0 PDSN PDST PSAP QoS SCTP TCAP RIPA RPC RTP SeGW SIP SMS TCP UA UDP URL VoIP WAN Packet Data Service Node Packet Data Service Termination Public Safety Answering Point Quality of Service Stream Control Transmission Protocol Transaction Capabilities Application Part Remote IP Access Remote Procedure Call Real-Time Transport Protocol Security Gateway Session Initiation Protocol Short Message Service Transmission Control Protocol User Agent User Datagram Protocol Uniform Resource Locator Voice over IP Wide Area Network Definitions and Abbreviations 000-

14 X.S A v.0 List of Parts The Parts that comprise of this document are shown in Table. Each document in the series is numbered as a Part. Each Part represents an area of focus within the series of documents. Part Table List of Parts Title 000-A cdma00 Femtocell Network: Overview 00-A cdma00 Femtocell Network: Packet Data Network Aspects 0-A cdma00 Femtocell Network: x and IMS Network Aspects 0-0 cdma00 Femtocell Network: x Supplementary Service Aspects List of Parts

15 GPP X.S A v.0 Architectural Model and Reference Points. Femtocell cdma00 x Circuit Service Architecture This section describes cdma00 x circuit service Femtocell network architectures. 0.. IMS-based Femtocell cdma00 x Circuit Service Architecture with MSC MS x The figure below shows the access network reference architecture for cdma00 x circuit service access from a Femtocell base station. This figure represents the IMS-based architecture used with an MSC. Femtocell Access Point SIP UA x Macro Base Station Fx Legend: FCS Femtocell Convergence Server FMS Femtocell Management System F-AAA Femtocell AAA A A Security Gateway A (AAA) AN- AAA MSC Fx (AAA) Fx (RTP) Fx (SIP) Fm F-AAA HLR/AC ISUP ISUP TDM FMS TDM Fx (RTP) IP Network PDE Fx (RTP) TDM MAP PSTN MGCF /MGW ISUP Mg (SIP) Fx (SIP) IP Multimedia Network MPC PSAP IMS Mm (SIP) MC FCS Ma (SIP), ISC (SIP), or Sh (Diameter) Figure IMS-based cdma00 x Circuit Service Femtocell Network Architecture with MSC Notes:. Location Based Services are supported using [X.S000], [X.S00], and [C.S00]. Emergency services calls are supported using [J-STD-0].. The Ma, Mg, Mm, Sh and ISC reference points are as defined in [TS.00]. Architectural Model and Reference Points 000-

16 X.S A v.0.. IMS-based Femtocell cdma00 x Circuit Service Architecture with MSCe MS x The figure below shows the access network reference architecture for cdma00 x circuit service access from a Femtocell base station. This figure represents the IMS-based architecture used with an MSCe in support of LMSD. x Macro Base Station Femtocell Access Point SIP UA Fx Legend: FCS Femtocell Convergence Server FMS Femtocell Management System F-AAA Femtocell AAA Figure Ap Ap Security Gateway A (AAA) MSCe AN- AAA (H.) Fx (AAA) Fx (RTP) Fx (SIP) Fm F-AAA HLR/AC (ISUP) MGW FMS zz (LMSD SIP) (TDM) PSAP Fx (RTP) IP Network PDE TDM MAP MAP PSTN MGCF /MGW Fx (RTP) ISUP Fx (SIP) MPC Mg (SIP) IP Multimedia Network LMSD/ IMS IWF Mm (SIP) Mm (SIP) MC Ma (SIP), ISC (SIP), or Sh (Diameter) IMS-based cdma00 x Circuit Service Femtocell Network Architecture with MSCe Notes:. The LMSD-IMS Interworking Function (LIIWF) provides interworking between the MSCe [X.S00] and IMS by interworking LMSD SIP and IMS SIP. This function is outside of the scope of this document.. The Ma, Mg, Mm, Sh and ISC reference points are as defined in [TS.00]... IOS-based Femtocell cdma00 x Circuit Service Architecture with MSC The figure below shows the access network reference architecture for cdma00 x circuit service access from a Femtocell base station. This figure represents the IOS-based architecture used with an MSC. IMS FCS Architectural Model and Reference Points

17 GPP X.S A v.0 0 MS x Femtocell Access Point FAP x Macro Base Station Fx A A Security Gateway MSC A MGW Ap (RTP) Fx A (AAA) Fx (AAA) Fm Legend: FGW Femtocell Gateway FLCS Femtocell Legacy Convergence Server AN- F-AAA FMS Femtocell Management System AAA F-AAA Femtocell AAA A (Opt) HLR/AC Figure IOS-based cdma00 x Circuit Service Femtocell Network Architecture with MSC ISUP FMS TDM FGW/ FLCS Notes:. Location Based Services are supported using [X.S000], [X.S00], and [C.S00]. Emergency services calls are supported using [J-STD-0]. A PDE MAP PSTN. Either A/A interface to MSC or E interface to the MAP network is used. E MPC PSAP. The interface between the MGW and FGW is outside the scope of this document... IOS-based Femtocell cdma00 x Circuit Service Architecture with MSCe The figure below shows the access network reference architecture for cdma00 x circuit service access from a Femtocell base station. This figure represents the IOS-based architecture used with an MSCe. MC Architectural Model and Reference Points 000-

18 X.S A v.0 MS x x Macro Base Station Femtocell Access Point FAP Fx Ap Ap Security Gateway A Legend: (AAA) FGW Femtocell Gateway FLCS Femtocell Legacy Convergence Server FMS Femtocell Management System F-AAA Femtocell AAA Figure MSCe AN- AAA Fx (AAA) Ap (RTP) Fm F-AAA (H.) Fx A (Opt) HLR/AC (ISUP) MGW FMS FGW/ FLCS IOS-based cdma00 x Circuit Service Femtocell Network Architecture with MSCe PDE MAP MAP Notes:. Location Based Services are supported using [X.S000], [X.S00], and [C.S00]. Emergency services calls are supported using [J-STD-0]... Network Entities Ap PSTN E PSAP. Either Ap/Ap interface or E interface to the MAP network is used.. The Ap interface between the FAP and MGW may go directly between the FAP and the MGW without going through the FGW. This document defines the following network entities: Femtocell Access Point (FAP); Security Gateway (SeGW); Femtocell AAA; Femtocell Management System (FMS); Access Network AAA (AN-AAA); Femtocell Convergence Server (FCS); and MPC MC Architectural Model and Reference Points

19 GPP X.S A v.0 0 Femtocell Gateway (FGW). Femtocell Access Point The FAP provides access for cdma00 x MS devices to support cdma00 x circuit services. This entity also provides a Femtocell access control function. Security Gateway The Security Gateway (SeGW) provides security functions for FAP access to the cdma00 core network. It supports: secure tunnel management procedures between itself and the FAP, including establishment and release of the tunnel; allocation of an IP address to the FAP from the serving cdma00 network; and encapsulation and de-capsulation of packets to and from the FAP. Through the interface to the Femtocell AAA, the SeGW supports Femtocell level authentication and transfer of authorization policy information. Femtocell AAA The Femtocell AAA provides a FAP authorization function. It sends authorization policy information to the SeGW. Femtocell Convergence Server The Femtocell Convergence Server (FCS) is an IMS Application Server that provides interworking among: the FAP that is supporting the cdma00 x mobile; the SIP environment of IMS; and the appropriate MAP network elements (e.g., HLR, MC, MPC, cdma00 x MSC). AN-AAA The AN-AAA provides authorization function for Femtocell access control. Femtocell Gateway/Femtocell Legacy Convergence Server The Femtocell Gateway (FGW) is a network entity that resides in an operator s network and provides gateway convergence functions between either an MSC (over the A/A IOS interfaces), an MSCe (over the Ap/Ap IOS interfaces), or the MAP network (over the E interface) and the FAP (over the Fx interface). The FGW provides aggregation, proxy, and signal routing functions for the FAPs to access services within the system operator s core network. Femtocell Management System The Femtocell Management System (FMS) is a network entity that resides in an operator's network and aids in the auto-configuration of the FAP before the MS can access services through the FAP... Reference Points The following reference points are introduced: Fx Fx The RTP bearer interface between the FAP and the Media Gateway (MGW) that carries the RTP payloads. The signaling interface that carries user SIP signaling between the FAP and the IMS core network. Architectural Model and Reference Points 000-

20 X.S A v.0 Fx Fx Fx A Fm.. Protocol Descriptions The IPsec tunnel between the FAP and the SeGW. The signaling interface between the Security Gateway and the Femtocell AAA. The signaling interface that carries application layer protocols on behalf of the MS between the FAP and the FGW. The signaling interface that carries control protocols between the FAP and the FGW. A is optional and is used only when SIP is not being used to provide transport of Fx. The interface between the FAP and the FMS for auto-configuration. The protocol stacks for the Femtocell x control plane provide six general functions:. Femtocell IOS Application Protocol (FIAP) conveys x circuit core network related information elements using a subset of IOS Application Layer messages;. FIAP Convergence Protocol (FIAPCP) -- representation and encapsulation of the FIAP messages;. Femtocell Control Protocol (FCP) control protocol between the FGW and the FAP to provide Femtocell-specific control functions (e.g., FAP registration, MS binding for MSs that are being served by the FAP, paging control and optimization);. FCP Convergence Protocol (FCPCP) representation and encapsulation of the FCP messages;. FIAP/FIAPCP transport protocols; and. FCP/FCPCP transport protocols.... FIAP (Femtocell IOS Application Protocol) The FIAP is comprised of a subset of IOS Application Layer messages (as defined in [A.S00] and [A.S00]) that are used between: the FAP and the FGW, or the FAP and the FCS, when SIP/IMS are used with an FCS (see Section... and..).... FIAPCP (FIAP Convergence Protocol) There are two optional protocols for FIAPCP:. The A application layer message encapsulation and representation protocol as defined in [X.S00-0]. This encapsulation and representation protocol is used when the FIAP messages are transported using SIP.. SUA as defined in [A.S00]. This encapsulation and representation protocol is used when the FIAP messages are transported using the Ap SCTP protocol stack.... FCP (Femtocell Control Protocol) There are two optional protocols for FCP: Architectural Model and Reference Points

21 GPP X.S A v.0 0. SIP SIP is used to transport FIAP messages to provide FAP registration, MS binding (for MSs that are being served by the FAP), paging control and optimization functions, etc., according to [X.S00] and [A.S00]. In this case, basic SIP procedures (e.g., SIP Registration) are used along with a minimal set of extensions (e.g., carried with SIP MESSAGE or SIP INFO requests).. A A is used when FIAP messages are transported using the protocol stack as specified in [A.S00] to provide FAP registration, MS binding (for MSs that are being served by the FAP), paging control and optimization functions, etc. A is optional and is not used when SIP is being used to transport FIAP messages.... FCPCP (FCP Convergence Protocol) There are two optional protocols for FCPCP:. SIP with Femtocell-specific extensions as defined in [X.S00] and [A.S00].. A representation as defined in [A.S00]. FCPCP is assumed to be null in this case.... FIAP/FIAPCP Transport Protocols There are two optional protocol stacks for FIAP/FIAPCP transport:. SIP transported over TCP, UDP, or SCTP according to [X.S00] and [A.S00].. SCTP/IP.... FCP/FCPCP Transport Protocols There are two optional protocol stacks for FCP/FCPCP transport:. SIP transported over TCP, UDP, or SCTP according to [X.S00] and [A.S00] when SIP is being used to transport FIAP messages.. SCTP when A is being used as the FCP. Architectural Model and Reference Points 000-

22 X.S A v.0.. cdma00 x Circuit Protocol Stack... IMS-based Femtocell Architecture... Control Plane between MS and FCS for Voice/SMS Figure Control Plane between MS and FCS for Voice/SMS... User Plane between MS and MGW for Voice Figure User Plane between MS and MGW for Voice Architectural Model and Reference Points

23 GPP X.S A v IOS-based Femtocell Architecture... Control Plane Protocol Stacks when the FGW Uses Ap to the MSCe Figure Control Plane Protocol Stacks when the FGW Uses Ap to the MSCe... User Plane Protocol Stacks when the FGW Uses Ap to the MSCe Voice CDMA00 air MS Figure Voice CDMA00 air FAP RTP UDP IP/IPsec L/L IP/IPsec L/L SeGW IP L/L IP L/L FGW/FLCS User Plane Protocol Stacks when the FGW Uses Ap to the MSCe Note: FGW is optional in the bearer plane for RTP traffic. RTP UDP IP L/L MGW Architectural Model and Reference Points 000-

24 X.S A v.0... Control Plane Protocol Stacks when the FGW Uses A to the MSC Figure Control Plane Protocol Stacks when the FGW Uses A to the MSC... User Plane Protocol Stacks when the FGW Uses A to the MSC Figure 0 User Plane Protocol Stacks when the FGW Uses A to the MSC... Protocol Stacks for FCP (FCP and FCP/FCPCP Transport) Figure Protocol Stacks for FCP (FCP and FCP/FCPCP Transport) Architectural Model and Reference Points

25 GPP X.S A v.0. HRPD/cdma00 x Packet Data Femtocell Architecture 0 The following figures show the HRPD or cdma00 x Packet Data Femtocell network architecture. In these figures, the only new interfaces introduced (see [X.S00] and [TS.00]) are: the interface between Femtocell Access Point and Security Gateway; the interface between Femtocell Access Point and Femtocell Management System; the interface between the Security Gateway and Femtocell AAA; and the interface between the Security Gateway and AAA. The HRPD Femtocell network architecture also supports Local IP Access (LIPA) which allows an MS to access either local IP networks or the internet through the local interface. Figure HRPD/cdma00 x Packet Femtocell Network Architecture.. Network Entities Note: All interfaces that pass through the SeGW entity are transported within a secure tunnel between the FAP and the SeGW. The Fx interface between FAP and SeGW is not shown in the figure. A description of new network entities and entities with new functions is provided below. Femtocell Access Point The FAP provides access for cdma00 x and HRPD devices to support cdma00 x packet data and HRPD services. This entity also provides a Femtocell access control function. Architectural Model and Reference Points 000-

26 X.S A v.0 Security Gateway The Security Gateway (SeGW) is a network entity that resides in an operator's network and provides secure access for the Femtocell Access Point to access services within the system operator s network. Femtocell Gateway The Femtocell Gateway (FGW) is a network entity that resides in an operator's network and provides aggregation and proxy functions for the Femtocell Access Point to access services within the system operator s network. Femtocell AAA The Femtocell AAA provides a FAP authorization function. It sends authorization policy information to the SeGW. Femtocell Management System The Femtocell Management System (FMS) is a network entity that resides in an operator's network and aids in the auto-configuration of the FAP before the MS can access services through the FAP. AN-AAA In addition to the function described in [C.S00] and [J-STD-0], the AN-AAA also provides a Femtocell access control function and LIPA authorization function. For LIPA authorization, the AN-AAA may access the Home AAA for authorization information, but this interface is outside the scope of this Specification... Reference Points The following new reference points make use of existing protocols and interfaces that are specified by GPP TSG-A, TSG-X, and IETF: A for HRPD access authentication between the AN function in the FAP and the AN-AAA. A for HRPD idle session handoff between the AN function in the FAP and another HRPD AN (AN). Identical to the HRPD A interface between two ANs. A- for HRPD active session handoff between the AN function in the FAP and another HRPD AN. Identical to the HRPD A- interface(s) between two ANs. A0/A interface between the AN/PCF function in the FAP and the PDSN. MIP/Proxy MIP between the FA/MAG function in the FGW and the HA/LMA. The architecture contains the following new reference points: Femtocell Access Point Security Gateway (Fx) The interface provides IPsec tunnel between Femtocell Access Point and Security Gateway. Security Gateway Femtocell AAA (Fx) The interface provides authorization to the Femtocell Access Point Architectural Model and Reference Points

27 GPP X.S A v.0 0 Femtocell Access Point Femtocell Management System (Fm) The Fm interface enables auto-configuration of the FAP by the FMS. SeGW AAA (Fx).. Protocol Stack... Control Plane The Fx interface enables the AAA to authorize the MS for Remote IP Access (RIPA) to the FAP.... Control Plane between FAP and SeGW Figure Control Plane between FAP and SeGW... Control Plane Between FAP, FGW, and PDSN Figure Control Plane Between FAP, FGW, and PDSN Architectural Model and Reference Points 000-

28 X.S A v.0... Control Plane Between MS and PDSN... User Plane Figure Control Plane Between MS and PDSN Figure User Plane. ehrpd Femtocell Architecture The following figure shows the ehrpd Femtocell network architecture. The architecture shown in Figure does not support optimized handoff between E-UTRA and ehrpd Architectural Model and Reference Points

29 GPP X.S A v Network Entities The ehrpd Femtocell network architecture also supports Local IP Access (LIPA) and remote IP Address (RIPA) as defined in section. of this document. Figure ehrpd Femtocell Network Architecture Refer to section.., [A.S00], and [X.S00] for description of network entities, except for the following. Evolved Femtocell Access Point (efap) The efap is a cdma00 wireless access point that provides coverage in a small area, usually a private residence or a small office, and connects the UE to the EPC (Evolved Packet core) of an operator s network via a broadband connection (e.g., DSL, cable). This entity also provides a Femtocell access control function. Architectural Model and Reference Points 000-

30 X.S A v.0.. Reference Points Refer to section.. of this document and [X.S00] for description of reference points with the exception PDSN is replaced with HSGW... Protocol Stack Refer to section.. of this document for description of protocol stack with the exception PDSN is replaced with HSGW Architectural Model and Reference Points